Alvin sells Dave's motor home to a guy named Gus in order to buy a piece of land that is claimed to have gold. While Dave travels to the next town over to make a wire transfer, the boys begin looking for gold. Simon builds a sluice box that is destroyed in a rock slide caused by Alvin. The slide uncovers a wall of gold that is unfortunately on someone else's land. They seek out Crazy Willy, the owner, in order to negotiate for the land. Once they discover the gold's been taken, the boys come up with a scheme to get it back. Crazy Willy arrives just in time to discover that the gold Gus stole was his, and Gus is arrested for theft. The motor home Alvin sold to Gus was determined to be fraudulent and is impounded by the police. However, Crazy Willy saves Alvin from deep trouble with Dave by buying the motor home at a police auction as a thank you to the Chipmunks.
- "We're in the Money" originally performed in the film Gold Diggers.
- "I Need That Gold Tonight" (modified) originally performed by Elvis Presley.
- The title is a pun on the saying "The Girl of My Dreams."